Steam-boiler.



H. STANTON. STEAM BOILER.

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H. STANTON. STEAM BOILER. APPLIOATION FILED JUNE 12, 1906.

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UNITED STATES PATENT OFFICE.

HENRY STANTON, OF BARNESVILLE, OHIO, ASSIGNOR. OF ONE-HALF TO JAMESDURANT BLAKEMORE, OF BARNESVILLE, OHIO.

To all whom it may concern:

Be it known that I, HENRY STANTON, of Barnesville, in the county ofBelmont and State of Ohio, have invented certain new and usefulImprovements in Steam- Boilers, of which the following is aspecification.

This invention relates to improvements in steam boilers and moreparticularly to that type which comprises a horizontal drum having waterlegs co-acting therewith.

In the preferred embodiment of my invention, I employ a horizontal drumhaving several water legs projecting downwardly therefrom, and thesewater legs are so arranged that the products of combustion have to passcompletely around them before they can find their exit through thestack. And with these water legs is also preferably combined asuperheater which is connected with the upper part of the drum so thatthe steam passes from the latter to said superheater before beingdelivered to the place of use. The aforesaid water legs are alsoprovided with studs which greatly increase their efficiency. 7

vWith this general statement, my invention may be said to consist in theboiler as will be now hereinafter described in its preferable embodimentand then definitely set forth in the claims at the end hereof.

In the drawings accompanying and forming part of this application:Figure 1 is a longitudinal central section of a boiler showing thepreferred embodiment of my invention. Fig. 2 is a vertical section ofthe same through the line 2-2 of Fig. 1. Fig. 3 is a similar sectionthrough the line 33 of Fig. 1, and Fig. 4 is a side elevation showingthe connections with the. various pipes.

Referring now to the details of the drawings by numerals: l. designatesthe drum which is preferably supported on the front and rear walls 3 and4, as clearly illustrated in Fig. 1. At-the bottom of the front wall 3,I preferably arrange the furnace which consists of the usual fuelchamber 6 and ash-pit 8 and grate-bars 10 between the same. Thegrate-bars are supported at their rear ends by the usual bridge-wall 11,and immediately over the front of the grate, at the top of the firechamber, is a horizontal baffle plate 12. The details of the furnace,however, need not be further mentioned, since any preferred form offurnace may be employed, and the furnace illustrated is merely one whichis now quite commonly used.

As will be seen in Fig. 1, I employ three water legs l4, l6 and 18 whichproject downwardly from the drum 1. The first of these legs 14 projectsvertically downward and is a little less than the full width of thechamber in which these legs project; but the other two legs 16 and 18project downwardly at anangle and differ from-the first leg 14 inextending the full width of the combus- Specification of Letters Patent.

Application filed June 12. 1906. fierial No. 321,406.

Patented. July 2, 190?.

tion chamber and completely occupy the same transversely, as will beseen from Fig. 2. These water legs are, of course, formed hollow as allwater legs are, but in order to increase their efficiency, I employstuds 20 which project outwardly into the combustion chamber on bothsides of their respective legs. I do not herein claim these studs asbroadly new, since they are claimed in one of my own prior patents, butI consider them as of great advantage in materially increasing theheating power of the downwardly projecting water legs.

It is a Well known fact that a solid stud projecting from the bottom ofthe boiler and extending into the water has to project over six timesits diameter before it will burn off, and since one square inch of heatsurface on the stud is equal to about six square inches of heatingsurface on the boiler sheet, the advantage of using these studs will beobvious. And when they are used in connection with the water legs, asshown in my drawings, in such a manner that the products of combustionhave to pass first down one side of the leg and then up another side ofthe leg, contacting with these studs and the legs in its passage to thestack, I produce a new effect which gives me the maximum heatingcapacity. At the rear end of the druml, immediately under the samewithin the combustion chamber, I locate my feed water heater 24 which isconnected to the drum by means of a connection 26 and is also connectedto the water legs 14, 16 and 18 by means of the horizontal pipe 28connecting, by means of the vertical pipe 30, with the horizontal pipe32 which is connected to the Water leg 14, as indicated at 34 in Fig. 1and to the water leg 16 at the point indicated by the numeral 36 and tothe water leg 18 at the point designated by the numeral 38. v

I have hereinbefore referred to the fact that the front water leg 14 isnot of the full length of the combustion chamber while the other waterlegs 16 and 18 are of the full length of said chamber. I have alsoreferred to the fact that the products of combustion are caused to keepin contact with the studs projecting from these water legs, and in orderto make this more effectual, I '10- cate two walls 40 and 42 in closecontact with the studs projecting from the right hand side, as seen inFig. 1, of the water legs 16 and 18. The first of these walls 40 issupported on a horizontal support 44 under which is arranged a damper 46and on each side of which may be arranged clean-out openings 48 and 50.The other of these walls, 42, rests upon a projecting part 52 of thebrick-work of the rear wall 4. It follows from this construction that,when the damper 46 is closed, the products of combustion have to pass upbehind each water leg, and between said leg and its wall before passingfrom one leg to the other, or from the last leg to the stack.

Between the two waterlegs 16 andl18, I prefer to arrange a superheater60, and this superheater has one pipe 62 connecting it to the upper sideof the drum 1, while the opposite end of the superheater has'a pipe 64connected to it which may lead to the place where the steam is to beused. I desire to call particular attention to the location of thissuperheatcr, sinceit is in one of the hottest parts of thefurnace, andby examining of Fig. l it will be seen that it is interposed between thetwo water legs 16 and 18 at a point where the products of combustionpass over the top of the wall 40 before going down the other water leg18.

While my boiler is so simple that no description of its operation isnecessary, it may nevertheless be well to state that the products ofcombustion are as follows: When the fire is starting, the damper 46 isopen when there is a direct draft from the top ofthe bridge walldirectly under the water legs 16 and'up between the water leg 18 and itswall 42 to the stack; but after said damper has been closed, theproducts of combustion have to take the circuitous path indicated by thearrows in Fig. 1. In other words, as the heat cannot now pass throughthe damper 46, its tendency is to first rise and, since the first waterleg 14 is not of the full length of the cylinder, any heat which ascendsdirectly upward will be allowed to pass over against the side of thewater legs 16, and all the products ofcombustion are thereafter causedto pass between the bridge wall and the lower end of legs 16. Theproducts of combustion then pass around the lower end of the water leg16 and up the whole length of the said leg, thoroughly heating the studsbetween said leg and the wall 40. After passing upwardly the wholelength of said wall 40, the products of combustion now have to passaround the superheater and downwardly the whole length of the water leg18,

, thus contacting with all the legs projecting from the left hand sideof said leg, as illustrated in Fig. 1. When the products of combustionreach the lower end "of the water leg 18, they have to pass around itand up between the other side of the water leg and its wall 42, againpassing the whole length of the water leg 18 before reaching the stack.

heat to the greatest possible extent.

While I have shown in my drawings what I now consider the preferableembodiment'oi my invention, it is obvious that changes may be madewithout departing from the spirit of my invention.

What I claim as new is:

1. In a steam boiler, a water chamber, a plurality of legs projectingdownwardly therefrom, one of said legs being not of the full width ofthe combustion chamber, and the other legs being. of the full width ofsaid chamber, and means for causing the products of combustion to make acircuitous path around said legs, substantially as described.

2. In a-steam boiler, ,a-water chamber, a plurality of water legsprojecting downwardlytherefrom, one of them being substantially over thefurnace and occupying less than the full space of the combustionchamber, and the other water legs projecting downwardly at an angle, and

stantially as described.

3. In a steam boiler of the water leg type, a water chamber, water legsprojecting dowmvardly therefrom, one of said legs being substantiallyover the furnace and needpying less than the full space of thecombustion chamber and the other legs occupying the full width oi.- thecombustion chamber whereby the products of combustion are caused to passaround said legs before reaching the stack, and a superheater locatedunder said water chamber and between the water legs, substantially asdescribed.

4. In a steam boiler, a water chamber, a plurality of water-legsprojecting downwardly therefrom, one of said legs projectingsubstantially over the furnace and being of a width less than that ofthe combustion chamber and the other legs being of the full width ofsaid chamber, and walls, as 40 and 42, co-acting with the full width ofthe water legs and causing the products of combustion to pass around thewater legs before reaching the stack, in com bination with a damperlocated at the bottom of one of said walls to provide a direct draft,substantially as described.

5. In a steam boiler, a horizontal water chamber, a plurality of waterlegs projecting downwardly therefrom and extending across the combustionchamber, studs projecting from said water legs into the path of the hotgases, walls as 40 and 42 in close proximity to said water legs and withthe studs between said legs and said walls whereby the products ofcombustion surround said studs, and a super-heater located at the upperpart of the combustion chamber connected with said water chamber,substantially as described.

6. In a steam boiler of the water leg type, a water chamber, a water legprojecting downwardly therefrom, :1 number of belts or studs projectinginto or through said water leg and also projecting into the path of thehot gases, in combination with a wall projecting alongside of said waterleg, whereby the products 01. combustion, in

passing between said leg and said wall, are caused to thoroughly heatsaid studs, substantially as described.

7. In a steam boiler of the water leg type, a water chamber, water legsprojecting downwardly therefrom, a number of bolts or studs projectinginto or through said water legs and also projecting into the path of thehot gases, in combination with walls projecting alongside of said waterlegs and having the projecting parts of: said studs between said waterlegs and said walls and one of said walls being interposed between saidwater legs, whereby the products of combustion are forced to pass aroundsaid water legs and are kept in close contact with the studs betweensaid legs and the walls, substantially as described.

8. In a steam boiler of the water leg type, a water chamber, water legsprojecting downwardly therefrom, a number of bolts or studs projectinginto or through said water legs and also projecting into the path of thehot gases, in combination with walls projecting alongside of said waterlegs and having the projecting parts of said studs between said waterlegs and said walls and one of said walls being interposed between saidwater legs, whereby the products of combustion are forced to pass aroundsaid water legs and are kept in close contact with the ,lugs betweensaid studs and the walls, and a superheater located under said waterchamber and between the water legs, substantially as described.

9. In a steam boiler of the water leg type, a water chamber, a pluralityof water legs extending across the furnace and projecting downwardlyfrom said water chamber, 11 series of studs projecting into said waterlegs and also outside thereof into the path of the hot gases and meansas the walls 40 and 42 also extending across the furnace in closeproximity to said water legs but with said studs located between saidlegs and said walls, substantially as described.

10. In a steam boilerof the water leg type, a water chamber, a pluralityof water legs extending across the furnace and projecting downwardlyfrom said chamber, a series of studs projecting from said water legsinto the path of the hot gases, means as the walls 40 and 42 alsoextending across the furnace in close proximity to said water legs butwith said studs located between said legs and said walls, and asuper-heater located under said water chamber and between said waterlegs, whereby the products of combustion are forced to pass between eachleg and its wall and around said super-heater, substantially asdescribed.

11. In a steam boiler of the water leg type, a water chamber, aplurality of water legs extending across the furnace and projectingdownwardly from said water chamber, a series of studs projecting intosaid water legs and also outside thereof into the path of the hot gasesand means as the walls 40 and 42 also extending across the furnace inclose proximity to said water legs but with said studs located betweensaid legs and said walls, and circulating pipes passing down andconnecting the water legs with the water-chamber, substantially asdescribed.

12. In a steam boiler of the Water leg type, a horizontal water chamber,a plurality of water legs projecting downwardly therefrom, one of thembeing over the furnace at near the end of the combustion chamber, andthe other legs projectingdownwardly between the first mentioned legs andthe stack, the said legs extending substantially across the boiler andhaving studs projecting therefrom, in combination with walls, as 40 and42 extending across the furnace, the studs projecting from said legsbeing between the legs and said walls, whereby the products ofcombustion are forced to pass upwardly for the whole length of the legsbetween the legs and said walls, substantially as described.

13. In a steam boiler of the water leg type, a horizontal water chamber,a plurality of water legs projecting downwardly therefrom, one of thembeing over the furnace at near the end of the combustion chamber, andthe other legs projecting downwardly between the first mentioned legsand the stack, the said legs extending substantially across the boilerand having studs projecting therefrom, in-combination with walls, as 40and 42 extending across the furnace, the studs projecting from said legsbeing between the legs and said walls, whereby the products ofcombustion are forced to pass upwardly for the whole length of the legsbetween the legs and said walls, and a superheater located between thesaid Water legs and over one of said transverse walls, substantially asdescribed.

Signed by me this 4th-day of June 1906.

- HENRY STANTON. Witnesses JOHN 0. CHAPPELL, W. 0. CHAPPELL.

